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Finding the Fourth Proportional to 59,928.80, 89,990.40 and 43,404.80

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Solution

The fourth proportional to 59,928.80, 89,990.40 and 43,404.80 is: 65,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,928.80 : 89,990.40 = 43,404.80 : x
  2. Step 2: Convert to fraction form
    59,928.80/89,990.40 = 43,404.80/x
  3. Step 3: Cross multiply
    59,928.80x = 89,990.40 × 43,404.80
  4. Step 4: Simplify right side
    59,928.80x = 3,906,015,313.92
  5. Step 5: Solve for x
    x = 3,906,015,313.92/59,928.80
  6. Step 6: Final answer
    x = 65,177.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.